CN101859317A - Method for establishing database cluster by utilizing virtualization - Google Patents
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Abstract
The invention provides a method for establishing a database cluster by utilizing virtualization, which utilizes the technical advantages of virtualization, ensures that all processing units in the database cluster obtain optimal resources, simultaneously improves the resource utilization rate of a physical hardware, and realizes the rapid deployment, expansion of the database cluster, the dynamic migration, the resource isolation of a multi-cluster system and the dynamic management of system resources, wherein the all processing units in the database cluster obtain optimal resources, i.e. a CPU, a memory and IO resources are customized and allocated in advance for a virtual machine according to the requirements of the processing unit in the database cluster for the resources in an underlying server system of the virtual machine; the improvement of the utilization rate of system resources means that a plurality of virtual machines are deployed and operated on the underlying server system of the virtual machine so as to improve the resource utilization rate of the underlying server of the virtual machine; the rapid deployment and expansion of the database cluster mean that the rapid expansion of the database cluster is realized through the mirroring replication function of a virtualized software; and the dynamic migration means that the dynamic migration of the virtual machine is realized by utilizing the virtualized software, and the service of the database cluster is not interrupted.
Description
Technical field
The present invention relates to the data-base cluster application, be specifically related to a kind of method of utilizing virtual structure data-base cluster, utilize virtual machine technique that data base cluster system is carried out resource optimization, dispose fast and expand dynamic migration and resource dynamic management.
Background technology
The database environment that data-base cluster (Oracle Real Application Cluster is called for short Oracle RAC) requires for most of key businesses provides high performance and perfect error correction.It not only allows the same physical database of a plurality of nodes sharing in group system or the large-scale parallel system; between multinode, carry out load balance, fault restoration and planning stop time automatically; to support high-availability applications; and, significantly improved the performance of large data warehouse and decision support system (DSS) by combining the concurrency that internodal concurrency and intranodal are provided with the parallel query option.
Talk about publicly knownly, along with the national information construction deepens continuously, it also is more and more widely that data-base cluster is used.But, from operation system actual motion overall condition, and unsatisfactory.One association database cluster application problem investigation result shows: the relevant responsible official near 1/3 represents that system does not bring into play actual performance, and there is the bigger wasting of resources in the average system load less than 20%; Responsible official near 1/5 represents that the data base cluster system deployment is loaded down with trivial details, misarrangement difficulty in the deployment; Responsible official above 1/10% represents system upgrade, migration, expansion complexity, must rely on the technical support of specialty just can realize; Simultaneously nearly 2/5 relevant responsible official represents that system resource management is opaque, usually can use and management is raised one's hand hopeless for system resource.
So whether a kind of outstanding solution is arranged, assurance can utilize the technical advantage of data-base cluster, can realize the cluster system resource reasonably optimizing again, group system is upgraded, expansion is fast and simple, realize the resource dynamic management of group system simultaneously? the problem that this present invention just attempted solving.
Summary of the invention
The purpose of this invention is to provide a kind of method that makes up virtual data-base cluster.
The method that purpose of the present invention makes up virtual data-base cluster realizes in the following manner, utilize virtualized technical advantage, guarantee that all processing units in the data-base cluster obtain optimized resource, improve the resource utilization of physical hardware simultaneously, the resource isolation of quick deployment of fulfillment database cluster and expansion, dynamic migration, multi-cluster system and the dynamic management of system resource; Wherein:
All processing units in the data-base cluster obtain optimized resource, are meant in virtual machine bottom server system according to the demand of the processing unit in the data-base cluster to resource, in advance to virtual machine customization distribution CPU, internal memory, IO resource;
Improve resource utilization ratio, be meant by moving a plurality of virtual machines and improve virtual machine bottom server resource utilization factor in virtual machine bottom server system deploy;
Data-base cluster is disposed and expansion fast, is meant the image copying function by virtualization software, the quick expansion of fulfillment database cluster;
Dynamic migration be meant the dynamic migration that utilizes virtualization software to realize virtual machine, and the data-base cluster service is not interrupted;
The resource isolation of multi-cluster system is meant in the virtual machine deploy and overlaps the independent database group system more, and the resource of every sets of data storehouse group system is relatively independent;
The dynamic management of system resource is meant the distributed resource scheduling function by virtualization software, integrates a plurality of resource pools or virtual machine bottom server is dynamically adjusted computational resource, and based on predefined regular smart allocation resource;
Excellent effect of the present invention is, utilizes the virtualization software technology, and virtual machine and data base set group configuration are saved as template file, then with this template file quick copy in other virtual machine bottom servers.Start 3 virtual machine bottom servers, start all virtual machines and data base cluster system simultaneously.Utilize the distributed resource scheduling function to realize the resource dynamic management of disparate databases cluster application system.
Description of drawings
Accompanying drawing 1 is based on virtual structure data-base cluster solution;
Accompanying drawing 2 is virtual data-base cluster Organization Chart.
Embodiment
With reference to Figure of description to explaining below the work of the present invention.
The method of the virtual data-base cluster of structure of the present invention, the method for utilizing virtual structure data-base cluster of introducing just can effectively address the above problem.For guaranteeing that all processing units in the data-base cluster obtain optimized resource, improve the resource utilization of physical hardware simultaneously, can utilize virtualized technical advantage again, the resource isolation of quick deployment of fulfillment database cluster and expansion, dynamic migration, multi-cluster system and the dynamic management of system resource.
Suppose that certain user has 4 cover application systems at present, the user wishes that hardware investment will minimize, and management maintenance will be simplified most.Application facet will satisfy every sets of data storehouse application system and realize resource isolation with other system, also need simultaneously can the dynamic debugging system resource with the peak period of each operation system that staggers.In addition, the user wishes to make up such cover system fast.
At above-mentioned user's request, the present invention has designed the solution that contains 3 virtual machine bottom servers (actual physical server), in the hardware environment of forming by 3 virtual machine bottom servers, dispose virtualization software, comprising virtual bottom server and virtual machine, then at virtual machine deploy data-base cluster.
On 3 actual physical server bare machines, install to dispose virtual machine bottom server (Virtual MachineServer), then virtual machine bottom server (Virtual Machine Server) the last distribution processor of V1 (CPU) resource, internal memory (MEMERY) resource, disk (DISK) resource 25% to virtual machine (VirtualMachine Guest).Linux or Windows operating system are installed on virtual machine, the basic running environment of group system is set.Under virtual machine (Virtual Machine Guest) operating system, install then and dispose data-base cluster software (Oracle RAC) and carry out cluster configuration.Dispose distributed resource scheduling software at last, 3 real server are carried out the resources allocation rule definition.
Its structure is as follows by concrete steps of the invention process:
1) design based on virtual structure data-base cluster solution at user's request, virtualization software cooperates data-base cluster;
2) on 3 actual physical servers (called after: V1, V2, V3), dispose virtual machine bottom server software respectively;
3) on 1 virtual machine bottom server, dispose 4 virtual machines respectively, called after V1-1/2/3/4;
4) according to the demand of user's 4 cover application systems, 4 virtual machines are carried out the resource customization to resource.If the user does not have specific (special) requirements, then temporarily according to 1: 1: 1: 1 resource distribution mode is disposed virtual machine (mainly being CPU, internal memory, disk resource distribution);
5) at virtual machine V1-1/2/3/4 deploy data-base cluster standalone version, called after RACA/B/C/D, utilize the image copying function of virtualization software, to be configured the V1-1/2/3/4 that finishes and the RACA/B/C/D template file directly copies to V2 and above the V3, start also to revise V2-1/2/3/4, V3-1/2/3/4 and RACA/B/C/D virtual machine and data-base cluster basic configuration;
6) the RACA/B/C/D data-base cluster comprises RACA-1/2/3/4, RACB-1/2/3/4, RACC-1/2/3/4 and RACD-1/2/3/4 again.Wherein RACA/B/C/D is an application data base cluster global title, and RACA-1/2/3/4 is the title of processing unit in the data base cluster system.Application data base cluster RACA/B/C/D isolates aspect resource fully in present design;
7), in RACA/B/C/D data-base cluster application system, during a certain application system peak state, can from other application systems, dynamically adjust resource at 3 virtual machine bottom server deploy distributed resource scheduling softwares;
8) from step 5 as can be seen, utilize the inventive method, aspect group system expansion and migration, also very convenient and simple.
Claims (1)
1. method of utilizing virtual structure data-base cluster, it is characterized in that, utilize virtualized technical advantage, guarantee that all processing units in the data-base cluster obtain optimized resource, improve the resource utilization of physical hardware simultaneously, the resource isolation of quick deployment of fulfillment database cluster and expansion, dynamic migration, multi-cluster system and the dynamic management of system resource; Wherein:
All processing units in the data-base cluster obtain optimized resource, are meant in virtual machine bottom server system according to the demand of the processing unit in the data-base cluster to resource, in advance to virtual machine customization distribution CPU, internal memory, IO resource;
Improve resource utilization ratio, be meant by moving a plurality of virtual machines and improve virtual machine bottom server resource utilization factor in virtual machine bottom server system deploy;
Data-base cluster is disposed and expansion fast, is meant the image copying function by virtualization software, the quick expansion of fulfillment database cluster;
Dynamic migration be meant the dynamic migration that utilizes virtualization software to realize virtual machine, and the data-base cluster service is not interrupted;
The resource isolation of multi-cluster system is meant in the virtual machine deploy and overlaps the independent database group system more, and the resource of every sets of data storehouse group system is relatively independent;
The dynamic management of system resource is meant the distributed resource scheduling function by virtualization software, integrates a plurality of resource pools or virtual machine bottom server is dynamically adjusted computational resource, and based on predefined regular smart allocation resource;
Concrete steps are as follows:
1) at the data-base cluster of user's request design based on the virtualization software cooperation of virtual structure;
2) on 3 actual physical server V1, V2, V3, dispose virtual machine bottom server software respectively;
3) on 1 virtual machine bottom server, dispose 4 virtual machines respectively, called after V1-1/2/3/4;
4) according to the demand of user's 4 cover application systems to resource, 4 virtual machines are carried out the resource customization, the user does not have specific (special) requirements, and then temporarily according to 1: 1: 1: CPU, internal memory, disk resource that 1 resource distribution mode is disposed virtual machine distribute;
5) at virtual machine V1-1/2/3/4 deploy data-base cluster standalone version, called after RACA/B/C/D, utilize the image copying function of virtualization software, to be configured the V1-1/2/3/4 that finishes and the RACA/B/C/D template file directly copies to V2 and above the V3, start also to revise V2-1/2/3/4, V3-1/2/3/4 and RACA/B/C/D virtual machine and data-base cluster basic configuration;
6) the RACA/B/C/D data-base cluster comprises RACA-1/2/3/4, RACB-1/2/3/4, RACC-1/2/3/4 and RACD-1/2/3/4 again, wherein RACA/B/C/D is an application data base cluster global title, RACA-1/2/3/4 is the title of processing unit in the data base cluster system, and application data base cluster RACA/B/C/D isolates aspect resource fully in present design;
7), in RACA/B/C/D data-base cluster application system, during a certain application system peak state, from other application systems, dynamically adjust resource at 3 virtual machine bottom server deploy distributed resource scheduling softwares.
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